75681861 has 8 divisors (see below), whose sum is σ = 101835360. Its totient is φ = 49991472.

The previous prime is 75681857. The next prime is 75681869. The reversal of 75681861 is 16818657.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 75681861 - 2² = 75681857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75681869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115395 + ... + 116048.

It is an arithmetic number, because the mean of its divisors is an integer number (12729420).

Almost surely, 2^75681861 is an apocalyptic number.

It is an amenable number.

75681861 is a deficient number, since it is larger than the sum of its proper divisors (26153499).

75681861 is a wasteful number, since it uses less digits than its factorization.

75681861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231555.

The product of its digits is 80640, while the sum is 42.

The square root of 75681861 is about 8699.5322288040. The cubic root of 75681861 is about 422.9904876332.

The spelling of 75681861 in words is "seventy-five million, six hundred eighty-one thousand, eight hundred sixty-one".